stay with us. >> low-end welcome. i'm phil torrez here to talk about innovations that can change lives. we're going to explore the intersection of hardware and humanity . lindsay moran is a former cia agent, kyle hill is an engineer, tonight he's got the dirtiest job and the science that can revolutionize indians's dairy farms. michelle nixon, and i'm phil tors. that' torrez and let's do some science. >> we are back for another exciting show and lindsay you can start us off. this is important to you as a mother. >> i did a story on ballistic backpacks and bulletproof backpacks. one being a former cia officer who thinks any layer of added security is good and one as a mom in do i really want to give my kids the idea that this kind of technology is going to keep them safe? let's have a look. >> as a former cia agent i learned how to shoot a variety of guns. so when techknow asked me to cover a story about the trend in bulletproof back to school supplies, it intrigued me. as a former operative and as a mom. back to schoo